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Restricted Cash and Deposits - Schedule of Restricted Cash and Deposits (Details) - Restricted Cash, Deposits and Marketable Securities [Member] - EUR (€) € in Thousands | Jun. 30, 2025 | Dec. 31, 2024
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Schedule of Restricted Cash and Deposits [Line Items] |  |  |
Short-term restricted cash |  | € 13,930 | € 656
Restricted cash and bank deposits, long-term | [1] | € 13,128 | € 17,052
[1] | Deposits used to secure obligations towards the Israeli Electricity Authority for the license for the pumped-storage project in the Manara Cliff in Israel and to secure obligations under loan agreements.

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- Definition The amount of cash and cash equivalents whose use or withdrawal is restricted. [Refer: Cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard -URIDate 2025-03-27 + Details
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